Plot 2D images in 3D scatter plot

16 次查看（过去 30 天）
Gregor
Gregor 2018-10-25
评论： ACHAMMA JACOB 2019-1-30
Hello,
I recorded someone moving in front of a camera and now I have a 3D scatter plot of points that track that person's eyes (red and green in the picture below) over x, y and time. I want to insert single frames at specific time locations to show the current status of the input frame. How do I insert (transparent) 2D images into 3D plots?
Now I know how to create surfaces of images, and I also tried playing with hgtransform. However I'm not able to place both scatter3 and image in the same plot. They always end up on separate axes. I think those 2 links are related:
another question
exchange
Thanks for your help

请先登录，再回答此问题。

采纳的回答

Oliver Woodford
Oliver Woodford 2018-10-26
h = surface(X, Y, Z, im, 'facecolor', 'texturemap', 'edgecolor', 'none');
alpha(h, 0.5);
X, Y, and Z are each 2x2 matrices containing the x, y and z coordinates of the 4 corners of your image, im.
  5 个评论
显示 3更早的评论
Oliver Woodford
Oliver Woodford 2018-12-9
The vol3d method can do what you want, so it is possible. The relevant lines are:
opts = {'cdatamapping',[],'alphadatamapping',[],'facecolor','texturemap','edgealpha',0,'facealpha','texturemap'};
surface(x,y,z,cslice,'alphadata',aslice,opts{:});
From that code it doesn't look like AlphaData does need to be 2x2.
ACHAMMA JACOB
ACHAMMA JACOB 2019-1-30
how to convert a jpg binarized image into scatter plot if we doesnot have the data points?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Graphics Performance 的更多信息

标签

产品


版本

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by